Fluid motor



May 19, 1953 F. R. EMIG FLUID MOTOR .2 'Ashets-sheet 1 Filed Nov. 8, 1949 Hm b fw... v

INVENTOR.

BY MKZ@ F. R. EMM;y

FLUID MOTOR A May 19, 1953 2 Sheets-Sheet 2 Filedv Nov". 8, 1949 INVENTOR.

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Patented May 19, 1953 FLUID MOTOR Frank R. Emig, Wadsworth, Ohio, assignor to The Ohio Injector Company, Wadsworth, Ohio, a

corporation of Ohio Application November 8, 1949, Serial No. 126,228

This invention relates to a fluid motor, particularly a water motor, especially designed for the operation of shower apparatus, and specifically shower apparatus for use with paper-making machines and adapted to project sprays of relatively high pressure water upon the felts, cylinders or wires thereof, and so operable that the spray pipe of the shower apparatus may be reciprocated axially and water automatically supplied under relatively high pressure to the spray nozzles of such spray pipe.

In spray apparatus for paper-making machines it is desirable to provide relatively simple mechanism capable 'of operation for extended periods of time without attention, and it is also desirable to conserve both power for its operation and the water used.

One object of the invention is, therefore, to provide a fluid operated motor, specicially a water motor, for imparting reciprocation to the shower spray pipe of such simple and rugged construction that it is capable of continuous and unattended operation over long periods of time.

' Another object is to provide a motor which is capable of efficient operation by water simultaneously supplied to it and to the shower spray pipe, and which, in the interest of water conservation, has its exhaust of water conducted to the shower spray pipe,

A further object is to simplify installation of the apparatus f-or operation with respect to a paper-making machine, and to this end only one water connection is required, water therefrom being conducted to the motor to furnish motive fluid, and to the shower spray pipe, respectively, under the control of suitable valves mounted in and forming parts of the apparatus.

The invention comprises a iiuid motor, specically a water motor for paper-making machine shower apparatus, and including a casing or body cham-bered to provide a power cylinder and iluid passages communicating withsuch cylinder, valve means for controlling said passages, a piston reciprocable in the power cylinder under the iniiuence of iiuid (water) admitted. to and exhausted from such cylinder through the valve controlled passages, said piston being capable of connection with and for reciprocating a spray pipe provided with spray nozzles to reciprocate the same, valves for controlling, respectively, the admission of water under pressure to the Valve controlled passages as a motive fluid for said piston and to the shower spray pipe for spray purposes; and the invention comprises, also, various structural details and combinations and arrangements of-parts including means for accomplishing 5 Claims. (Cl. 121-164) effective actuation of the valve means for said passages, thereby to insure proper automatic and trouble-free operation of the apparatus, all as will be explained hereinafter more particularly and nally claimed.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similarly designated,

Fig. 1 is a side elevation of the apparatus of the invention with associated shower spray pipe and means for supporting and guiding its outer end during reciprocation, parts of the shower spray pipe being broken away,

Fig. 2 is an enlarged longitudinal horizontal section of the fluid or water motor taken on the lines 2-2 of Figs. 1 and 4,

Fig. 3 is a vertical longitudinal section of the motor taken on the line 3-3 of Fig. 4,

Fig. 4 is an end view of the apparatus as seen from the left of Figs. l to 3,

Figs. 5, 6 and 7 are vertical transverse sections taken on the lines 5 5, 6-6 and 1 1, respectively, of Fig. 3, and

Fig. 8 is an end view of the apparatus as seen from the right of Figs. 1 to 3, the shower spray pipe being shown in section.

The apparatus, in its combination with a shower spray pipe comprises the motor A, the shower spray pipe B, B and cooperating guide means C, C', for supporting and guiding the shower spray pipe B, B during its reciprocation. The parts may be mounted and secured in appropriate relation to a paper-making machine upon some available part of the machine or upon a prepared bracket, as indicated by the .broken line D, Fig. 1.

The motor A has a body, preferably of multipart form for ease of assembly, suitably chambered. to accommodate the working parts of the motor and providing a water manifold I (Figs. 3

cylinder I0 having a reciprocable piston II in sliding sealed engagement with a tubular guide member I2 secured at one end I3 in the inner wall I4 of the cavity 'I and having its other end adapted to be telescoped within the shower spray pipe B which is xedly connected with the piston II for reciprocation therewith. Thus the tubular guide member l2 will provide a passageway between the cavity l and the recprocable shower spray pipe B to furnish a constant supply of water under suitable pressure from the valved port of the cavity l to the spray nozzles I4 of the spray pipe B'.

Within the lateral extension I5 of the body is a double-ended master or reversing valve I6 reciprocable in a complemental valve cylinder i1 and having at its opposite ends, under control of the reversing valve, iiuid inlet ports I8, I8" and exhaust ports I9, i9. The inlet ports I8, IB' communicate through a manifold I8" and appropriate connecting passage 6 (Fig. 6) with the inlet passage and, upon alternate strokes of the reversing valve IS, through passages 2), 2B' and 2i, 2 I with the opposite ends of the power cylinder It. The exhaust ports i9, Izl also com municate through the passages ZI, 2l with .the opposite ends of the power cylinder il), and through openings 22, 2,2', a manifold ,23 and connecting passages 2d, 25 and 2t with the cavity TI which, as stated, will be in communication with the shower spray pipe B through the tubular guide member I2. The openings 22;, 22' are controlled by check valves 2l, 21 mounted upon rods carried by and reciprocable with the reversing valve I6.

Mounted in spider bearings 28 in the passage 2'6` is a slide rod 29 tted at its ends with ofstanding arms 31E, 3D' which carry striker pins 3I, 3l extending through the head walls of the power cylinderI l0 and adapted to be contacted and moved by the power piston il adjacent to the ends of its stroke in opposite directions, the striker pins 3|, 3l', through the arms 3G, 38', thus. being capable of imparting reciprocatory movement to the slide rod '29.

Connected with the slide rod 29 and reversing valve IS, midway of their length, by yoke and pinr connections 32, 33, respectively, is a tele scopic, spring loaded toggle member 34 adapted upon movement of the slide rod 29 to nd a fulcrum upon one or the other oi two xed abutment members 35, 35',

The operation of the apparatus, particularly in its adaptation as a motor for a shower .spray pipe, is substantially as follows: Assuming that the motive uuid (water)l is supplied under adequate pressure (say 100 p. s. i.) through the pipe 3 Aand inlet 2 to the water manifold I, and that thevalves 8 and t hav'ebeen given a preliminary setting which is thought to be proper for desired operation, it will be seen that, with the parts of the motor in the positions shown in Figs. 2 and 3, the water will enter and ll the. inlet passage 4l through the port 4 under control of its valves 8 and at a pressure (say 100 p. s. i.) adequate to operate the motor. Also, the water will enter the cavity l, under control of the valve 9 at substantially lower pressure (say 8G p. s. i.) due to its relatively unrestricted flow by reason of the large area of the valve opening and free communication of the cavity 7 with the tubular guide member I2 and spray pipe B, B', and will ll the passages connected therewith, and also ll the shower spray pipes Bl, B' and issue in jets from the nozzles I4'.

The relatively high pressure iiuid in the inlet passage VEi, G enters the manifold I8", and by reason of the port i3 being ciosed by the lefthand portion of the reversing valve li., and the check valve 2'! closing off the opening 22, will issue from the valve cylinder i7 through the ports I8 and 'I9 and the passageways 20 and -2I into the right-hand end of the power cylinder I0 thus to cause the power piston II to move to the left, carrying with it the shower spray pipes B, B. Meanwhile water trapped in the left-hand end of the power cylinder will exhaust through the passageway 2I, lexhaust port IS and opening 22' to the manifold 23, from which it finds its way through connecting passages 24, 25 and 26 to the cavity I wherein it mingles with the water admitted to the cavity through the inlet port ii thereof controiled by the valve 9, and enters the shower spray pipe thus commingled. it will be apparent, therefore, that both sides of the piston II are subjected to water under considerable pressure, but that the pressure of the water serving to move the piston is, of course, greater than that being exhausted into the cavity I (say 100 p. s. i. and 80 p. s. i. respectively).

Obviously, as the power piston moves to the left in the power cylinder I5) it will strike pin 3l' causing it to move to the left and carry with it the slide rod 2S; The reversing valve I6 is meanwhile held against movement to the right by pressure diierence as applied to its opposite Aends (say 100 p. s. i. at the right-hand end and 80 p. s. i. at the left-hand end), and by a predetermined difierence in effective area of the two faces of the valve 2, the smaller of which is subjected to the relatively high pressure water (say 100 p. s. i.) in the right-hand end of thel valve cylinder VI, and the larger to relatively lower pressure (say 80 p. s. i.) from the manifold 23. Thus, by a predetermined diierential of pressures acting upon the two ends of the valve i6, and upon the two different eiiective areas of the opposite faces of the valve 2l, the sum of the net forces is a greater force acting to the left. Also, the retention of the valve l5 in its left-hand position is augmented by the angular iorce exerted against it by the spring toggle member 3-1 until this member passes dead center. With the valve I6 thus held to the left, the movement of the slide rod 29 to the left will cause 'the toggle member 34 to pivot around its yoke and pin connection 33 on the reversing valve l5, whereby the spring of the toggle member will be compressed and its loading thereby increased, and when the toggle member 34 strikes against the left-hand abutment member 35 it will iind a fulcrum against which it can act as a lever to cause movement of vthe reversing valve to the right which, although slight, is enough to unseat the valve 2l', whereupon, with pressure in the cylinders I? and lll relieved,rthe spring loaded toggle member 34 will cause the reversing valve to quickly move, with a snap action, to the right,

closing inlet port Iand opening inlet port and bringing valve 21 toits seat while valve 2l' isV meanwhile fully opened. A sequence of operations similar to those described will now functionv to operate the power piston il and other mechanism in opposite sense, and this reversal of operations, and consequent reciprocation of the shower spray pipe B, B will continue automatically untilv the manually actuated valves 8 and 9 are closed. The speed `oi operation of thc motor, and hence the rapidity of reciprocation of the shower spray pipe l5, B', can be regulated by suitable adjustment of the valve 8, and the volume of water added to that exhausted from the motor for spray purposes may be regulated by adjustment of the valve 9.

Various changes andmodications are considered tobe within the principle of the inventionrand-Vthe scope of the following claims.

fvided with a power cylinder, a power piston reciprocative in said cylinder and to which means to be reciprocated may be connected, and means for controlling the ow of motive uid alternately to and from the oppositeends of saidcylinder, Asaid controlling means including inlet and exhaust Aports in said body and communicating with the cylinder at opposite ends thereof and .with a source of motive fluid and with an exhaust cavity in said body, respectively, a reversing valve cooperatively associated with said ports and reciprocable relatively thereto and subjected to Vfluid pressure serving normally to hold it immovable, means operable n response to reciprocation of said power piston for mechanically imparting preliminary movement to said reversing valve in opposition to the holding effect of said iiuid pressure, and including means for thereafter automatically biasing said reversing valve to complete its movement alternately in one or the other direction of its reciprocation, and pressure relief valve means mechanically actuated by said reversing valve during its preliminary movement and serving to relieve the fluid pressure acting upon said reversing valve to thereby permit substantially instantaneous operation of said biasing means.

2. A fluid actuated motor having a body provided with a power cylinder, a power piston reciprocative in said cylinder and to which means to be reciprocated may be connected, means for controlling the flow of motive fluid alternately to and from the opposite ends of said cylinder, said controlling means including inlet and exhaust ports in said body and communicating respectively with said cylinder at opposite ends thereof and with a source of motive fluid and with an exhaust cavity in said body, a reversing valve cooperatively associated with said ports and reciprocable relatively thereto and subjected to iiuid pressure serving normally to hold it immovable, means operable in response to reciprocation of said piston for imparting preliminary movement to said reversing valve in opposition to the holding effect of said uid pressure, and including means for thereafter automatically biasing said reversing valve to complete its movement alternately in one or the other direction of its reciprocation, valve means mechanically actuated by said reversing valve during its preliminary movement and serving to relieve iiuid pressure acting upon said reversing valve to thereby permitv substantially instantaneous operation of said biasing means, and means for permitting motive uid exhausted from said power cylinder to enter said exhaust cavity.

3. A fluid actuated motor having a body provided with a power cylinder, a power piston reciprocative in said cylinder and to which means to be reciprocated may be connected, an exhaust cavity in-said body, a tubular member xed in a head wall of said cylinder and communicating with said exhaust cavity, said piston being slidable upon said tubular member and said means to be reciprocated being connected with said piston and in telescoping engagement with said tubular member, means for controlling the flow of motive fluid alternately to and from the opposite ends of said cylinder, said controlling means including inlet and exhaust ports in said body and communicating respectively with said cylinder at opposite ends thereof and with the source of motive iiuid and with said exhaust cavity, a reversing valve cooperatively associated withsaid ports and reciprocable relatively thereto and subjected to iiuid pressure serving normally to hold it immovable, means, `operating `in response to reciprocation of said-pistonffor *imparting` preliminary movement to said reversing valve in opposition to the holding effect of vsaid uid pressure, and including means for thereafter automatically biasing said reversing valve to complete its movement alternately in one or the other di,- rection of its reciprocation, valve means mechanicallyk actuated by said reversing valve during its preliminary movement and serving to relieve the fluid pressure acting upon said reversing valve to thereby permit substantially instantaneous operation of said biasing means, and means permitting motor fluid exhausted from said power cylinder into said exhaust 'cavity "to- Ienter said means to be reciprocated through said tubular member.

4. A fluid actuated motor having a body provided with a power cylinder, a power piston reciprocative in said cylinder and to which means to be reciprocated may be connected, means for controlling the ow of motive fluid alternately to and from opposite ends of said power cylinder, said controlling means including inlet and exhaust ports in said body and communicating respectively with said power cylinder at opposite ends thereof and with a source of motive fluid and with an exhaust cavity in said body, a piston like reversing valve cooperatively associated with said ports and reciprocable relatively thereto and subjected to uid pressure serving normally to hold it immovable, a cylinder for said reversing valve, means operable in response to reciprocation of said power piston for imparting preliminary movement to said reversing valve in opposition to the holding effect of said fluid pressure, and including means for thereafter automatically biasing said reversing valve to complete its movement alternately in one or the other of its directions of reciprocation, openings at opposite ends of said valve cylinder in communication with said exhiaust cavity, and check valves carried at opposite ends of and movable with said reversing valve and functioning to control said openings to relieve pressure in the valve cylinder upon the preliminary movement of said reversing valve whereby said biasing means may be capable of substantially instantaneous operation.

5. A iud actuated motor having a body provided with a power cylinder, a power piston reciprocative in said cylinder and to which means to be reciprocated may be connected, Iand means for controlling the ow of motive fluid alternately to and from the opposite ends of said power cylinder, said controlling means including inlet and exhaust ports in said body and communicating with said power cylinder at opposite ends thereof and with a source of motive uid and with an exhaust cavity in said body, respectively, a reversing valve cooperatively associated with said ports and reciprocable relatively thereto and subjected to pressure iiuid serving normally to hold it immovable, a slide rod reciprocable in said body and carrying striker pins extending into said power cylinder for engagement with and movement by said power piston adjacent to opposite ends of its reciprocation, a spring loaded toggle member connected at its opposite ends with said reversing valve and said slide rod, xed fulcrum means in said body for abutting cooperation with said toggle 7 member whereby movement of saidv slide iodin response to mover-nem,` of said power piston will through cooperation of said toggle member' with `self! ful-mlm means cause lel. partial movement of said reversing.valve-nopposton to the holding `effect-of said fluid press-ure, and valve means actuated by said reversing valve upon such partiail.movement to release the. iluld pressure normlly .acting to hold `sai'id valve immovable and thereby permit the spring loading of said toggle memer' to complete movement of the valve.l

FRANK 'R'. EMIG.

References eia moth@ me. of this patent UNITED STATES PATENTS Y Name v Date Number Number 

